Modification of acid supports by solid-state redox reaction Part II. Acid and catalytic properties

ZSM-5 and Y zeolites, γ-alumina, and silica modified by solid-state redox reaction with zinc, gallium, manganese, and iron were studied in the conversion of cyclohexane and the nonoxidative conversion of ethane. The catalytic behavior was related to acid properties characterized by temperature-programmed desorption of ammonia (TPAD).